The Unwritten Law (1985) — Cast
Cast
| Andy Lau | Lau |
| Deanie Ip | Lau |
| Yammie Lam Kit-Ying | |
| Joann Tang | |
| Lau Siu-Ming | Ming |
| Paul Chun Pui | Prosecutor |
| Lai Suen | |
| Wong Wai | |
| Andy Tai Chi-Wai | |
| Chan Yau-Hau | |
| Stuart Yung Sai-Kit | Client |
| Gam Biu | Doctor |
| Chan Yuet-Yue | |
| Hon Lai-Fan | |
| Ng Yip-Kwong | |
| Felix Lok Ying-Kwan | |
| Cheung Sek-Aau | Suzette Wong |
| Mak Shu-San | |
| Joseph Lee Kwok-Lun |
Crew
| Ma Koon-Wah | Director of Photography |
| Poon Hung | Assistant Director |
| Ng See-Yuen | Director |
| Ng See-Yuen | Producer |
| Ng See-Yuen | Writer |
| Poon Hung | Editor |
| Su Rui | Songs |